//Construct a new instance. see crypto/aes
// returning a block cipher that satisfies the crypto/cipher.Block interface
func NewCipher(key []byte) (cipher.Block, error) {
aes := new(aesKey)
key_p := pointerFromBytes(key)
key_bits := C.int(len(key) * 8)
if ret := C.AES_set_encrypt_key(key_p, key_bits, &aes._aes_encrypt_key); ret != 0 {
// in case the error is something deep in OpenSSL land
if err := sslerr.Error(); err != nil {
return aes, err
}
if ret == -1 {
return aes, errorInvalidKey
}
if ret == -2 {
return aes, errorWrongSizeKey
}
// standard fallback error
return aes, errorSettingKey
}
if ret := C.AES_set_decrypt_key(key_p, key_bits, &aes._aes_decrypt_key); ret != 0 {
// in case the error is something deep in OpenSSL land
if err := sslerr.Error(); err != nil {
return aes, err
}
if ret == -1 {
return aes, errorInvalidKey
}
if ret == -2 {
return aes, errorWrongSizeKey
}
// standard fallback error
return aes, errorSettingKey
}
return aes, nil
}
//Construct a new instance. see crypto/aes
func NewCipher(key []byte) (cipher.Block, error) {
aes := new(AESKey)
key_p := pointerFromBytes(key)
key_bits := C.int(len(key) * 8)
if C.AES_set_encrypt_key(key_p, key_bits, &aes._aes_encrypt_key) != 0 {
return aes, errors.New("problem setting key")
}
if C.AES_set_decrypt_key(key_p, key_bits, &aes._aes_decrypt_key) != 0 {
return aes, errors.New("problem setting key")
}
return aes, nil
}